SYSWINGS / FIELD NOTES
Understand.
Then decide.
Methods, practical guidance and useful questions. An engineering perspective on the decisions that keep your systems running.
IT strategy
Outsourced CTO/CIO: technical leadership at the right pace.
Connect business priorities to technical decisions without waiting for a full-time leadership team. Scope, responsibilities and working practices.
Operations
Operations & security: reliability over time.
Availability and security belong together. Organise responsibilities, changes and ongoing system maintenance.
Resilience
Continuity & recovery: plan before failure.
Start with critical business activities to define realistic continuity and a recovery plan your team can execute.
Data
A backup only matters if it restores.
Frequency, retention, isolation and testing: build a strategy that actually protects your data.
Architecture
High availability starts with failure domains.
Duplicating servers is not enough. Design continuity across every layer of the service.
Cloud
VPS, private cloud, IaaS, PaaS: choose your scope.
Compare what you consume, what you administer and what you delegate.
Engineering
From prototype to production: ask new questions.
After “is it possible?” come reliability, reproducibility and operations.
Open source
IAM & SSO: connect tools, keep access coherent.
A common identity simplifies use. It also requires careful design of permissions and dependencies.
Virtualisation
VMs, microVMs, containers: choose your isolation.
Three execution models with different trade-offs in compatibility, density and operations.
Managed services
Service levels: response is not recovery.
Intervention, recovery and availability measure different things. Define each commitment precisely.
Hosting
Hosting in France: the questions that matter.
Location is a starting point. Also examine access, backups, dependencies and exit arrangements.